Every QB in the league is a 'Game Manager'. That's the most overused intended to be detrimental term in QB analysis.
He has a 10-4 career postseason record, including a win and an MVP award in Super Bowl XLVII. The Ravens are 7-2 in playoff games that he has started since 2010, and Flacco has 20 touchdowns and just three interceptions during that time.
I'm not saying he's in Rodgers' or Luck's class, but he's definitely more than a 'Game Mgr'. I'd be happy for the Rams to have 2 such Game Mgrs.
That's not a detrimental term, I don't know what you mean by that. That's just what he is, sometimes a spade is a spade, he's a game manager. He doesn't really do much, he gets TDs sometimes, but primary he makes sure he moves the ball down field and limits mistakes. Guy was a day one starter and has 8 seasons under his belt and has only sniffed being halfway to 30 TDs twice. Compare that to Ryan, it's a completely different story. You can go all Bill Polian on me as you want, but just saying 'every QB is a game manager when you get down to it.' isn't going to change the fact that the two sets of guys contribute different things and are counted on to do a different set of tasks from each other. Would you say that Jay Cutler is just as much of a game manager as Alex Smith? It has nothing to do with talent, but what they're called upon to do with their talent.
That TD to INT ratio was about as doable again as Foles' TD to INT ration from 2013, both of those had to do with about as much luck as talent, and they definitely won't happen again so using it as some barometer of whatever it's supposed to be a barometer of really doesn't do it for me.
Also postseason wins hardly count as an individual accolade. Trent Dilfer went 5-1 in the playoffs himself, 4-0 with the Ravens, will you be rushing to tell me he's elite?